Compressor valve



Sept. 14 1926. 1,599,414

. L. R. HUFF 'colrnsssoa VALVE Filed Jan 29. 1926 2 Sheets-Sheet 2 INVENTOR.

I H15 ATT RNEY.

2 Sheets- Sheet 1 mmvroa.

L. R. HUFF COI PRESSOR VALVE I Filed Jan. 29, 1926 Sept. 14, 1926.

Patented Sept 14, 1926.

UNITED STATES PATENT OFFICE.

LESLIE R. RUFF, OF PHILLIPSBUBG, NEW'JERSEY, ASSIGNOR TO INGERSOLL-RAND COMPANY, OF JERSEY, CITY, NEW JERSEY, A CORPORATION OF NEW JfERSEY.

' COMPRESSOR VALVE.

Application filed January 29, 1926. Serial No. 84,653.

This invention relates to compressors but more particularly to improvements in the design of plate valves for compressors structions illustrated in the accompanying,

drawings, in which Figure 1 is a top-plan view of a plate valve assembly embodyingthe elements of my invention,

Figure 2 is a transverse cross sectional view of thesame valve assembly taken along the lines 1-1 in Figure 1,

Figure 3 is a detailed perspective view of a valve plate and the form .of valve spring guide arm'shown in Figure 2, and

Figures 4, 5 and 6 are enlarged detailed transverse sectional views broken away showing modifications of the assemblyflshown in Figure 1 in which coil springs are substituted for spring arms. Referring to the drawings, A represents a valve seat preferabl circular in form-and provided with a flui passagewa B. i The valve seat is formed with the at seating surfaces C inclined at an angle to the longitudinal axis of the valve and a rigid valve plate D preferably rectangular in' form is adapted to be seatedon said inclined surfaces C over the passageway B. A slot F is cut in the bottom of the groove formed b the inclined seating surfaces C and a stop 1 forming a partition wall is adapted to fit within this slot and to be held there fixedly by means of the screws H. The sides of the stops G are cut so that'the will'be approximately per endicular' to t e valve seat and they are a apted to be used as back stops for the valve plates D.

.The valve plates D are held in proper relation to the inclined seating surfaces (1 by means of spring arms J which are at-- tached at oneend-to the valve lates by the rivets K and which. are at the other end in the slots F and are held there by means of the stops G. These s ring arms J are adapted to normally hol the valve plate against its seat but when pressure is built up in the cylinder forcing the valve open, they will guide the valve plates back against the stops and generally perform the functions of a valve guide.

Indentations L are made in the stop plate to receive the heads of the rivets K and thus allow the valve plate when open to lie flush against its stop H. \Vhen this is done, it will be seen that an unbroken line of-flow is offered through the ports B in the valve seat. As is shown in Figures 1 and 2 the stops G have been seated in slots F- at the bottoms of the grooves in the valve seat.

This is a preferred means for aflixing them.

to the valve seat but any other satisfactory method could be employed.

Figure 4 is a modification of my invention in which the spring clip or arm for guiding the valve plate is dispensed with, and a coil spring 0 is used. Recesses P are cut alternately on each side of the stop G opposite the two valve plates D and D while buttons or raised cylindrical portions Q are formed on the valve plate at a point 0 posite to the recesses P in the stop G,

a lowing coil s rings 0' to be placed in the recesses P an to engage the buttons Q, thereby normally holding the valve plate in a fixed relation to and upon the valve seating surfaces C.

Figure 5 is a further modification of my invention in which the valve plate D is allowed to rest in the bottom of the groove formed by the inclined seating surfaces and is provided with a fulcrum S upon which it is adapted to rock between the seating surfaces C and the back stop G while the coil spring 0 is applied to the device in any preferred manner.

. In Figure 6 cylindrical bores B have been drilled through the partition wall or back stop G and one coil spring is used to exert pressure on the valve plates D and D located on each side of the said back stop, the said spring being located in the bore intermediate of thetwo valve plates and bearing upon each with equal pressure.

1 ani not to'be understood as limiting myself to the exact and precise details shown in the drawings or'described in the speci-v fication but what I claim are't-he general improvements in the design of the type of :valve described, which can. be modified in seat having diverging sides forming inclined surfaces over said passages, rectangular stops attached rigidly to the valve seat at the bottom of said grooves and perpendicular to the said valve seat, recesses in the sides of said stops and'coil springs in said recesses adapted to bear upon said valve plates at right angles thereto and to hold them'upon their seats.

2. A plate valve comprising a valve seat having passageways, grooves in said valve seat having diverging sides forming inclined flat seating surfaces, rigid valve plates adapted to be seated on said inclined surfaces over said passageways, slots in the bottom of said grooves, stops held in said slots by screw means perpendicular to the valve seat, recesses in said stops, and coil springs adapted to be held in said recesses and to bear upon the said valve plates at' right angles thereto for normally holding the valve plates upon their seats.

3. A plate valve comprising a valve seat at 'right angles thereto to normally hold the valve plates upon their seats.

4. A plate valve comprising a valve seat having passageways, grooves in said valve seat having diverging sides forming inclined fiat seating surfaces, slots in the bottoms of the grooves, rigid valve plates adapted to seat on said inclined surfaces over the passageways, stops to beheld in said slots by screw means perpendicular to the valve seat, recesses in said stops, buttons or relieved cylindrical portions on said valve plates op-' posite and adjacent to the said recesses in said stops, coil springs adapted to lie in the said recesses and to fit over the said buttons for holding the said valve plates in proper relation to the said inclined seating surfaces. In testimony whereof I have signed this specification.

LESLIE R. HUFF. 

